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Technician

There's no doubt that blue-eyed Chloe Kingsbury is a special kid, but how she came into this world can only be described as exceptional.

Chloe's father, Chad Kingsbury, carries a gene for a deadly genetic colon cancer that has taken the lives of four family members, including his mother and grandfather.

"I have seen what this disease can do firsthand. I held my mother's hand while she died," he said. "I look at my grandma. Every time I see her there is an emptiness there. She lost all three of her children, and I just … I just couldn't do that."

Since he carries the gene, Chad has an 85 percent chance of getting colon cancer and his offspring have a 50 percent chance of inheriting the gene.

But a new advance in genetics and reproductive medicine called preimplantation genetic diagnosis, or PGD, which uses in vitro fertilization has allowed the Kingsburys to bring Chloe into the world with no fear of getting the disease.

"[PGD] is basically getting a diagnosis of an embryo prior to implantation or prior to...